These data are from MNRF’s Fish Stocking Information System (FSIS: 2001- 2021). This summary is for LOMU Brown Trout stocking events only. If you see anything that looks like an error, please let me know.
This table shows the age (min and max) of the various Brown Trout life stages, and the time of year (month) that they were stocked. n = number of stocking events of the particular life stage.
| LIFESTAGE | n | min_age | max_age | min_month | max_month |
|---|---|---|---|---|---|
| Spring Fingerling | 11 | 4 | 6 | 4 | 6 |
| Fall Fingerling | 29 | 10 | 12 | 10 | 11 |
| Spring Yearling | 280 | 14 | 19 | 2 | 6 |
| Adult | 3 | 77 | 77 | 5 | 5 |
MNRF-stocked fish are almost exclusively Spring Yearlings. Other life stages are generally stocked by community hatcheries.
| YEAR | Spring Fingerling | Fall Fingerling | Spring Yearling | Total |
|---|---|---|---|---|
| 2001 | 1,400 | – | 172,341 | 173,741 |
| 2002 | – | – | 162,746 | 162,746 |
| 2003 | – | – | 181,276 | 181,276 |
| 2004 | – | – | 171,821 | 171,821 |
| 2005 | – | 65,508 | 173,799 | 239,307 |
| 2006 | – | – | 91,811 | 91,811 |
| 2007 | – | 81,079 | 170,211 | 251,290 |
| 2008 | – | – | 177,133 | 177,133 |
| 2009 | – | – | 178,510 | 178,510 |
| 2010 | – | – | 190,040 | 190,040 |
| 2011 | – | – | 163,314 | 163,314 |
| 2012 | – | 33,342 | 177,710 | 211,052 |
| 2013 | – | 25,287 | 166,308 | 191,595 |
| 2014 | – | 45,000 | 162,098 | 207,098 |
| 2015 | 20,000 | 30,861 | 177,169 | 228,030 |
| 2016 | 20,000 | 35,000 | 163,727 | 218,727 |
| 2017 | 35,000 | 18,600 | 173,741 | 227,341 |
| 2018 | 35,000 | 30,000 | 178,549 | 243,549 |
| 2019 | 35,000 | 30,000 | 178,721 | 243,721 |
| 2020 | 35,000 | 19,000 | 156,320 | 210,320 |
| 2021 | 35,000 | – | 160,600 | 195,600 |
| Total | 216,400 | 413,677 | 3,527,945 | 4,158,022 |
Total number of Brown Trout stocked by stocking zone (most recent five years; 2001 - current). The map at the bottom of this page shows the location of the various stocking zones.
MNRF-produced fish only; click on the legend to isolate life stages.
Note: biomass is given in kg.
| YEAR | Fall Fingerling | Spring Fingerling | Spring Yearling | Total |
|---|---|---|---|---|
| 2001 | – | 2.8 | 9,689.9 | 9,693 |
| 2002 | – | – | 9,956.8 | 9,957 |
| 2003 | – | – | 8,716.8 | 8,717 |
| 2004 | – | – | 7,414.6 | 7,415 |
| 2005 | 1,242.9 | – | 6,794.6 | 8,038 |
| 2006 | – | – | 4,153.5 | 4,154 |
| 2007 | 1,754.2 | – | 8,189.2 | 9,943 |
| 2008 | – | – | 7,055.0 | 7,055 |
| 2009 | – | – | 5,421.6 | 5,422 |
| 2010 | – | – | 4,790.0 | 4,790 |
| 2011 | – | – | 3,409.8 | 3,410 |
| 2012 | 834.6 | – | 5,833.0 | 6,668 |
| 2013 | 601.6 | – | 4,851.5 | 5,453 |
| 2014 | 1,155.0 | – | 3,940.2 | 5,095 |
| 2015 | 462.9 | 40.0 | 6,526.0 | 7,029 |
| 2016 | 525.0 | 40.0 | 7,467.4 | 8,032 |
| 2017 | 380.8 | 70.0 | 7,985.0 | 8,436 |
| 2018 | 600.0 | 70.0 | 7,756.3 | 8,426 |
| 2019 | 750.0 | 175.0 | 8,218.8 | 9,144 |
| 2020 | 475.0 | 70.0 | 6,830.1 | 7,375 |
| 2021 | – | 70.0 | 6,734.8 | 6,805 |
| Total | 8,782.0 | 537.8 | 141,734.9 | 151,055 |
Average dates of Brown Trout stocking events (spring yearlings only)
Average stocking site temperatures by year. Overall average (all years) indicated by horizontal dashed line and red text annotation.
Stocking events aggregated by stocking site (spring yearlings only). Radius of circle indicates biomass (kg) stocked